This wasn't mutiny sending extra money, it was the user paying the same invoice from 2 separate wallets at the same time, allowing the receiver to claim more than the payment amount.
If anyone is using nostr:npub1mutnyacc9uc4t5mmxvpprwsauj5p2qxq95v4a9j0jxl8wnkfvuyque23vg wallet a lot keep an eye on what it's telling you and the actual balance. Somebody paid an invoice (regular old BOL11 with a defined request amount, not a zero) to me with it and it overpaid by almost 13000 sats and didn't report that to the wallet owner. Not saying don't use it just keep a close eye on it.
Discussion
how is this possible in the blockchain?
or because it's lightning, that may happen?
This is lightning